Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
KIRBY ROAD READY MIX CONCRETE
5401 KIRBY RD, CLINTON, MD, 20735
Parent company: HOLCIM PARTICIPATIONS (US) INC
PBT
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
Full release table
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Lead compounds | Lead And Lead Compounds | Mercury And Mercury Compounds | Mercury compounds | Total (lbs) |
| 2024 | — | — | 0 | 2 | — | 2 |
| 2023 | — | — | 0 | 1 | — | 1 |
| 2022 | — | 0 | — | — | 1 | 1 |
| 2021 | — | 0 | — | — | — | 0 |
| 2020 | — | 0 | — | — | — | 0 |
| 2019 | 542 | 0 | — | — | — | 542 |
| 2018 | — | — | 10 | — | — | 10 |
| 2017 | — | 1 | — | — | — | 1 |
| 2016 | — | 13 | — | — | — | 13 |
| 2015 | — | 8 | — | — | — | 8 |
| 2014 | — | 46 | — | — | — | 46 |
| 2013 | — | 18 | — | — | — | 18 |
| 2012 | — | 28 | — | — | — | 28 |
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.